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Instantiate 22133
Overview DuckDB-Wasm can be instantiated in several ways, depending on how your application bundles and serves its assets. Each approach resolves the mainModule (the WebAssembly file) and the mainWorker (the worker script) for the browser's ... capabilities, then hands them to AsyncDuckDB . This page shows the patterns for a jsDelivr CDN, webpack, Vite and statically served files. Once instantiated, the db object is used to import data and run queries . Bundle Se ... lection DuckDB-Wasm ships several WebAssembly modules compiled for different browser feature sets, because post-MVP WebAssembly features reach browsers at diffe ... rent speeds and each one can bring a flat performance improvement. The selectBundle function runs dynamic browser checks and picks the fastest bundle the current browser supports: mvp — the WebAssembly 1.0 (MVP) baseline, supported ever ...
https://man.mtool.work/duckdb/2.0/clients/wasm/instantiation.html
Profiling 20534
Profiling is essential to help understand why certain queries exhibit specific performance characteristics. DuckDB contains several built-in features to enable query profiling, which this page covers. For a high-level example of using EXPLA ... s an HTML output, which can be rendered with treeflex json – produces a JSON output mermaid – produces a Mermaid flowchart web – opens the query graph in a web browser (command line client only) To specify a format, use the FORMAT tag: EXPLAIN (FORM ... AT html) SELECT 42 AS x; New As of DuckDB 2.0, the web format is available in the command line client . EXPLAIN ANALYZE (FORMAT WEB) renders the query graph and opens it in a we ... b browser, and the .web dot command does the same for the previous query. Both are disabled in safe mode . Pragmas DuckDB supports s ...
https://man.mtool.work/duckdb/2.0/dev/profiling.html
AWS Extension 18837
The aws extension adds functionality, e.g., authentication, on top of the httpfs extension's S3 capabilities , using the AWS SDK. Installing and Loading The aws extension will be transparently autoloaded on first use from the official exten ... redentials automatically using the AWS SDK. It is provided by the aws extension and supports profiles, SSO, assumed roles, web identities (IRSA), and instance metadata. The full list of S3 secret parameters that apply to both providers ( ENDPOINT , ... edential_chain, CHAIN 'env;config' ); The possible values for CHAIN are the following: config sts sso env instance process web_identity (for IAM Roles for Service Accounts (IRSA) ; see Web Identity (IRSA) ) The credential_chain provider also allows ... by adding an sso_session and sso_account_id to the profile manually. Second, sign in from the command line, which opens a browser to complete authentication and caches a temporary token locally: aws sso login --profile ⟨my-sso-profile⟩ Third, create a ...
https://man.mtool.work/duckdb/2.0/core_extensions/aws.html
DuckDB Wasm Client 16853
Installation To use the DuckDB Wasm client, visit the duckdb-wasm GitHub repository . The latest stable version of the DuckDB WebAssembly client is 2.0.0. DuckDB-Wasm is a version of DuckDB that has been compiled to WebAssembly , the portab ... le binary format that browsers can run at near-native speed. This lets a full DuckDB engine run entirely inside any browser on any device, with no serve ... ries to and no data leaving the user's machine. It offers a layered API to fit different needs: embedded as a JavaScript + WebAssembly library used as a Web shell built from source This page covers installation and basic usage; the other pages in th ... ing queries, loading extensions, and deploying it. Try It Yourself The shell below is a full DuckDB engine running in your browser — type a SQL query and run it right here: Note The shell above is itself built with DuckDB-Wasm. It is the @duckdb/duckdb- ...
https://man.mtool.work/duckdb/2.0/clients/wasm/overview.html
Deploy 16727
Overview Deploying DuckDB-Wasm means serving its components so that the browser can fetch and instantiate them. This page describes each component a deployment needs to serve, how the worker and WebAssembly variants relate, how extensions a ... nstantiated multiple times for threaded environments. For further details, see below. Wasm Worker Component. Compiled as a WebAssembly file and instantiated by the browser. For further details, see below. DuckDB Extensions. Any relevant extensions t ... be served as-is: it requires transpilation, because it needs to know the location of the follow-up files — the worker and WebAssembly components — in order to work. The exact steps depend on your setup; see the examples in the repository . For inst ... .duckdb.org deployment transpiles the main library together with the shell code (the first approach above), while the bare-browser example shows a minimal setup. JS Worker Component This is distributed as a JavaScript file in three different flavors, mv ...
https://man.mtool.work/duckdb/2.0/clients/wasm/deploying_duckdb_wasm.html
Dot Commands 14885
Dot commands are available in the DuckDB CLI client. To use one of these commands, begin the line with a period ( . ) immediately followed by the name of the command you wish to execute. Additional arguments to the command are entered, spac ... d executed by the -ui argument . CALL is prepended to COMMAND . Default: CALL start_ui() .version Show the DuckDB version .web Render the query graph of the previous query and open it in a web browser. Equivalent to EXPLAIN ANALYZE (FORMAT WEB) . Di ...
https://man.mtool.work/duckdb/2.0/clients/cli/dot_commands.html
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